How the Night Glow Diamond came about...
Through the years there were many discussions with our
customers about the phenomenon of fluorescence in diamonds. This is when
a diamond is placed under a black light and the diamond will glow blue.
Unfortunately, as soon as the diamond is taken away from the black
light the beautiful blue color disappears.
When a customer experiences diamond fluorescence for the first
time they are normally very surprised. Most of our customers like the
idea of fluorescence which refers to photo-luminescence of a diamond.
They love to see their diamond glow under our G.I.A. (Gemological
Institute of America) color grader that also checks for fluorescence and
shows off the vivid almost luminescent blue glow. Unfortunately, the
only time you get to enjoy this phenomenon is at a night club or other
use of black lights. Several customers stated that it was such a shame
that everyone could not experience this incredibly beautiful glow at
night. As one customer said, “I can only show my diamond off during the
day. At night when it gets dark you might as well not even wear it,
nobody can see it.” This comment along with many others became the
inspiration that started the long road to develop the first and only
diamond that will glow at night.
The first major breakthrough came when Bill Disinger discovered
that a diamond could be cut in order to magnify and maintain the
scintillation of light. Acting on the same principal of a magnifying
glass, the light is amplified down through the diamond. Once this was
accomplished a photo luminescent membrane of matching angles would sit
below the stone. The membrane then reflects the light back up into the
diamond creating a uniform glow. Thus, the first Night Glow Diamond was
It has been many years since that first successful glowing
diamond was created. And, there have been numerous breakthroughs along
the way that have brought our team to this point. Now we are able to
share this phenomenon and beauty of photo luminescence that is
trademarked as the Ocular Brand Diamond. This new round cut diamond
has been tested to glow at night up to 8 hours, glowing in the colors of
Caribbean Blue or Sea Foam Green.
The Story Begins in 1932, Huntingburg, Indiana
It all started in 1932 by Ervin and Mildred Kruger. Ervin
was a watchmaker in Southern Indiana, which lead to jewelry repair and
gradually evolving thru the years into a full scale jewelry store.
Later, diamonds became a major part of the quickly growing business, as well.
In 1983, Bill Disinger, grandson of Ervin
and Mildred, took the management reigns of the jewelry store. With a
background in architectural design and further studies in gemology, Bill
was able to use his structured knowledge in symmetry, design, and
function to build upon what his grandparents had started many years
before. Apprenticing with his grandfather honed his skills to
incorporate his teaching into what has now become a state of the art
manufacturing Jewelry Company.
A new chapter has now begun in the history
of Disinger & Kruger Jewelers with the development of the patent
pending Night Glow Diamond.
Ervin and Mildred Kruger
Disinger Kruger Jewelers Store • 404 E. Fourth Street, Huntingburg, IN